CN102473375A - Plasma display panel driving method and plasma display device - Google Patents
Plasma display panel driving method and plasma display device Download PDFInfo
- Publication number
- CN102473375A CN102473375A CN2010800308046A CN201080030804A CN102473375A CN 102473375 A CN102473375 A CN 102473375A CN 2010800308046 A CN2010800308046 A CN 2010800308046A CN 201080030804 A CN201080030804 A CN 201080030804A CN 102473375 A CN102473375 A CN 102473375A
- Authority
- CN
- China
- Prior art keywords
- scan electrode
- scanning impulse
- electrode group
- scan
- pulse width
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
- G09G3/293—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for address discharge
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
- G09G3/292—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for reset discharge, priming discharge or erase discharge occurring in a phase other than addressing
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
- G09G3/293—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for address discharge
- G09G3/2932—Addressed by writing selected cells that are in an OFF state
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
- G09G3/294—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for lighting or sustain discharge
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0202—Addressing of scan or signal lines
- G09G2310/0213—Addressing of scan or signal lines controlling the sequence of the scanning lines with respect to the patterns to be displayed, e.g. to save power
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Plasma & Fusion (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of Gas Discharge Display Tubes (AREA)
Abstract
Disclosed is a plasma display panel driving method wherein an image display area is divided into a plurality of partial display areas, scanning electrodes included in the partial display area is divided into two scanning electrode groups consisted of a scanning electrode group including odd-numbered scanning electrodes and a scanning electrode group including even-numbered scanning electrodes, scanning pulses are sequentially applied to one scanning electrode group and then sequentially applied to the other scanning electrode group, the pulse width of scanning pulses that are applied to first to predetermined-numbered scanning electrodes that belong to one scanning electrode group is set to be longer than the pulse width of scanning pulses that are applied to the other scanning electrodes that belong to the one scanning electrode group, and the pulse width of scanning pulses that are applied to first to predetermined-numbered scanning electrodes that belong to the other scanning electrode group is set to be longer than the pulse width of scanning pulses that are applied to the other scanning electrodes that belong to the other scanning electrode group.
Description
Technical field
The driving method of the Plasmia indicating panel that the present invention relates in wall hanging TV set or large-scale monitor, to use and used the plasma display system of this plasma display panel.
Background technology
Plasmia indicating panel (below; Abbreviate " panel " as) front substrate and back substrate are carried out arranged opposite; Said front substrate formed a plurality of by the long scan electrode of line direction with to keep the show electrode that electrode constitutes right; Said back substrate has formed the long data electrode of a plurality of column directions, forms discharge cell at show electrode on to each position that intersects with data electrode.
As the method for driving panel, generally have son (sub field) method, be about to a field interval and be divided into many sub-field, and show according to wanting sub luminous combination to carry out gray scale.
During each sub-field has an initialization, write during and keep during, produce the initialization discharge in during initialization, and on each electrode, form the required wall electric charge of ensuing write activity.During writing, in the discharge cell that should show, optionally produce and write discharge and formation wall electric charge.Then; During keeping, to by scan electrode with keep the show electrode that electrode constitutes and keep pulse alternately applying, in having caused the discharge cell that writes discharge, produce and keep discharge; Make the luminescent coating of corresponding discharge cell luminous, show thereby carry out image.
And plasma display system is following device: for such panel that drives as stated, comprise scan electrode driving circuit, keep electrode drive circuit, data electrode driver circuit, each electrode is applied driving voltage waveform come display image.
In recent years, advanced the height of panel to become more meticulous, big pictureization, followed in this, the power consumption of plasma display system has the tendency of increase.Especially; Data electrode driver circuit is to apply the write pulse corresponding with picture signal to data electrode respectively to come in each discharge cell, to produce the driving circuit that writes discharge; But failure pattern is as display quality if the power consumption of data electrode driver circuit above permissible value, then can be carried out malfunction.In order to prevent these, use to allow the big circuit component of loss to get final product, but this can become one of bigger reason of cost rising.
Therefore; As the method that under the situation that can not reduce the image display quality, suppresses the power consumption of data electrode driver circuit; Proposed following method: change imposes on the order that writes pulse of data electrode; Thereby reduce the charging and discharging currents of data electrode, the power consumption of restricting data electrode drive circuit (for example, with reference to patent documentation 1).
Here, in order to change the order that writes pulse that imposes on data electrode, also need synchronously change to impose on the order of the scanning impulse of scan electrode.In order to be implemented in the driving method of record in the patent documentation 1; For example use following method: to n root scan electrode; Based on answering the images displayed signal; Switching is to apply scanning impulse successively from first scan electrode to the n root scan electrode, still the odd number scan electrode is applied scanning impulse successively and afterwards the even number scan electrode is applied scanning impulse successively.
On the other hand, in high-fineness, big picture panel, because the increase of the number of scan electrode, so the time that is spent during writing is elongated.But have following problem: if it is elongated to be discharged to the time that writes till the discharge from initialization, then the required wall electric charge of write activity reduces, and becomes unstable thereby write discharge.
The prior art document
Patent documentation
Patent documentation 1: japanese kokai publication hei 11-282398 communique
Summary of the invention
Even the present invention provides a kind of high-fineness, big picture panel, also can carry out the stable driving method and the plasma display system of panel of switching of scanning impulse that writes discharge and can be used to cut down the electric power of data electrode driver circuit.
The driving method of panel of the present invention be by have write during with keep during many sub-field constitute the driving method that a field drives the panel of the panel that comprises a plurality of discharge cells; Said discharge cell comprise by scan electrode and keep show electrode that electrode constitutes to and data electrode; The driving method of said panel is characterised in that; The image display area of panel is divided into a plurality of parts viewing area of the scan electrode of the continuous configuration that comprises the regulation radical respectively; Scan electrode in the part viewing area is divided into the scan electrode group that is made up of the odd number scan electrode and two scan electrode group of the scan electrode group that is made up of the even number scan electrode with being included in; A scan electrode group is applied after the scanning impulse successively; Another scan electrode group is applied scanning impulse successively; And will to the scan electrode that belongs to a scan electrode group first to the stipulate the scanning impulse that several apply pulse width set comparison to belong to the pulse width of the scanning impulse that other scan electrodes of a scan electrode group apply long, will to the scan electrode that belongs to another scan electrode group first to the stipulate the scanning impulse that several apply pulse width set to such an extent that to compare the pulse width of the scanning impulse that other scan electrodes of belonging to another scan electrode group apply long.Through this method, even a kind of high-fineness, big picture panel can be provided, also can carry out the stable discharge that writes, and can be used to cut down the driving method of panel of switching of scanning impulse of the electric power of data electrode driver circuit.
In addition, the driving method of panel of the present invention also can be to each of part viewing area, and the ratio of the discharge cell number that detection should be lighted is used as part and lights rate, and lights the high part viewing area of rate from part earlier and begin to apply scanning impulse.
In addition, plasma display system of the present invention possesses: comprise the panel of a plurality of discharge cells, said discharge cell comprise by scan electrode and keep show electrode that electrode constitutes to and data electrode; And driving circuit; By have write during with keep during many sub-field constitute a field and drive panel; Said plasma display system is characterised in that; Driving circuit comprises a plurality of scans I C; Said scans I C applies scanning impulse to several scan electrodes of stipulating of continuous configuration; Two scan electrode group of the scan electrode group that will be divided into the scan electrode group that constitutes by the odd number scan electrode by the scan electrode that a scans I C is driven and constitute by the even number scan electrode; Scans I C applies after the scanning impulse successively to a scan electrode group; Another scan electrode group is applied scanning impulse successively, and will to the scan electrode that belongs to a scan electrode group first to the stipulate the scanning impulse that several apply pulse width set comparison to belong to the pulse width of the scanning impulse that other scan electrodes of a scan electrode group apply long, will to the scan electrode that belongs to another scan electrode group first to the stipulate the scanning impulse that several apply pulse width to be set at the pulse width of comparing the scanning impulse that other scan electrodes of belonging to another scan electrode group apply long.Through this structure,, also can carry out the stable plasma display system of switching of scanning impulse that writes discharge and can be used to cut down the electric power of data electrode driver circuit even a kind of high-fineness, big picture panel can be provided.
Description of drawings
Fig. 1 is the exploded perspective view of the panel that uses in embodiments of the present invention.
Fig. 2 is the electrode spread figure of above-mentioned panel.
Fig. 3 is the figure of driving voltage waveform that expression imposes on each electrode of above-mentioned panel.
Fig. 4 is the figure that has or not that writes pulse in a certain son of the expression field.
Fig. 5 is the figure of the power consumption of the data electrode driver circuit when being used to estimate to carry out write activity successively.
Fig. 6 is the figure of the power consumption of the data electrode driver circuit when being used to estimate to show the grid pattern identical with Fig. 5.
Fig. 7 to be the write sequence of expression each several part viewing area and stable to write discharge and the performance plot of relation between the amplitude of required scanning impulse in order producing.
Fig. 8 is that expression part to be lighted rate and stable to be write discharge and the figure of relation between the amplitude of required scanning impulse in order producing.
Fig. 9 is the synoptic diagram of the part viewing area of the panel in the expression embodiment of the present invention.
Figure 10 is the detailed sequential chart of an example of the write activity of the plasma display system of expression in the embodiment of the present invention.
Figure 11 is the circuit block diagram of above-mentioned plasma display system.
Figure 12 is the circuit diagram of structure of the scan electrode driving circuit of the above-mentioned plasma display system of expression.
Figure 13 is the circuit block diagram of details of the scans I C of the above-mentioned plasma display system of expression.
Figure 14 is the figure of action of output control part and on-off element of the scans I C of the above-mentioned plasma display system of expression.
Figure 15 is the figure of connection of the scans I C of the above-mentioned plasma display system of expression.
Figure 16 is the sequential chart of action of scans I C selection portion that is used to explain the scans I C of above-mentioned plasma display system.
Embodiment
Below, use the plasma display system in the description of drawings embodiment of the present invention.
(embodiment)
Fig. 1 is the exploded perspective view of the panel 10 that uses in embodiments of the present invention.On the front substrate 11 of glass, formed by scan electrode 12 with keep a plurality of show electrodes that electrode 13 constitutes to 14.And dielectric layer 15 forms and covers scan electrode 12 and keep electrode 13, and protective seam 16 is formed on the dielectric layer 15.Formed a plurality of data electrodes 22 overleaf on the substrate 21, dielectric layer 23 forms covers data electrode 22, on this dielectric layer 23, has formed the next door 24 of well word shape.And, on the side of next door 24 and the dielectric layer 23, be provided with the luminescent coating 25 that sends redness, green and blue these each colors.
These front substrates 11 and back substrate 21 are become show electrode to clip small discharge space to 14 with data electrode 22 by arranged opposite and intersect, and by encapsulants such as glass dust sealing peripheral part.And, in discharge space, for example charge into the mixed gas of neon and xenon as discharge gas.Discharge space is divided into a plurality of zones by next door 24, at show electrode 14 parts of intersecting with data electrode 22 has been formed discharge cell.And, through these discharge cells discharge, luminous, thereby display image.
In addition, the structure of panel 10 is not limited to above-mentioned structure, for example, also can be the structure with next door of striated.
Fig. 2 is the electrode spread figure of the panel 10 that uses in embodiments of the present invention.In panel 10; Arrange long n root scan electrode SC1～scan electrode SCn (scan electrode 12 of Fig. 1) of line direction and n root and kept electrode SU1～keep electrode SUn (Fig. 1 keep electrode 13), and arranged the long m single data electrode D1～data electrode Dm (data electrode 22 of Fig. 1) of column direction.And, at a pair of scan electrode SCi (i=1～n) and keep electrode Sui and a data electrode Dj (part of j=1～m) intersect has formed discharge cell, in discharge space, has formed m * n discharge cell.And, the pixel of these discharge cells during corresponding to display image.In this embodiment, below be respectively 768 scan electrodes and keep electrode, be that the situation of n=768 describes, but the present invention is not limited to this value.
The driving method of the panel 10 of the plasma display system in this embodiment then, is described.Panel 10 is about to a field interval and is divided into many sub-field through a son method, to every each discharge cell of sub-field control luminous/non-luminous, show thereby carry out gray scale.During every sub-field has an initialization, write during and keep during.
The figure of Fig. 3 driving voltage waveform that to be expression apply each electrode of the panel 10 that uses has in embodiments of the present invention represented the driving voltage waveform for two sub-field in Fig. 3.
During the initialization of son,, scan electrode SC1～scan electrode SCn is applied the tilt voltage that rises lentamente to voltage Vi2 from voltage Vi1 to keeping electrode SU1～keep electrode SUn to apply voltage 0 (V).Afterwards, to keeping electrode SU1～keep electrode SUn to apply voltage Ve1, and scan electrode SC1～scan electrode SCn is applied the tilt voltage that descends lentamente to voltage Vi4 from voltage Vi3.So, in each discharge cell, produce faint initialization discharge, on each electrode, form the required wall electric charge of ensuing write activity.In addition, as the action during the initialization, also can only apply the tilt voltage that descends lentamente as shown in during the initialization of second sub-field of Fig. 3 to scan electrode SC1～scan electrode SCn.
Action during ensuing the writing is an emphasis of the present invention, but will be described in detail in the back, and the summary of write activity is described here.
During writing,, scan electrode SC1～scan electrode SCn is applied voltage Vc to keeping electrode SU1～keep electrode SUn to apply voltage Ve2.Then, the scan electrode SCi that carries out write activity is at first applied the scanning impulse of negative voltage Va, and to the pulse that writes that should the luminous corresponding data electrode Dk of discharge cell applies positive voltage Vd of the row that carries out write activity at first.So, applied at the same time to produce in scanning impulse and the discharge cell that writes pulse and write discharge, to scan electrode SCi with keep write activity that electrode SUi accumulates the wall electric charge.
Then, second scan electrode SCj that carries out write activity applied scanning impulse, and to writing pulse with should the luminous corresponding data electrode Dk of discharge cell applying of second row that carries out write activity.So, applied at the same time to produce in scanning impulse and the discharge cell that writes pulse and write discharge, carry out write activity.In discharge cells of all row, carry out above write activity, make should luminous discharge cell optionally to produce to write discharge, form the wall electric charge.
During ensuing keeping,, scan electrode SC1～scan electrode SCn is applied the pulse of keeping of voltage Vsus to keeping electrode SU1～keep electrode SUn to apply voltage 0 (V).So, in having produced the discharge cell that writes discharge, produce and keep discharge, carry out luminous.Then, scan electrode SC1～scan electrode SCn is applied voltage 0 (V), and to keeping electrode SU1～the keep pulse of keeping that electrode SUn applies voltage Vsus.So, in having produced the discharge cell of keeping discharge, produce once more and keep discharge, carry out luminous.
Below, likewise, will alternately be applied to scan electrode SC1～scan electrode SCn and keep electrode SU1～keep electrode SUn corresponding to the pulse of keeping of the number of luminance weights.Afterwards, scan electrode SC1～scan electrode SCn is applied the tilt voltage that rises to voltage Vr, carry out so-called wall electric charge and eliminate, during finishing to keep.
In ensuing son field, also repeat and sub the above-mentioned identical action of action, thereby make discharge cell luminous, display image.
In addition; In this embodiment, the magnitude of voltage that each electrode is applied for example is voltage Vi1=145 (V), voltage Vi2=350 (V), voltage Vi3=190 (V), voltage Vi4=-160 (V), voltage Va=-180 (V), voltage Vsus=190 (V), voltage Vr=190 (V), voltage Ve1=125 (V), voltage Ve2=125 (V), voltage Vd=60 (V).In addition, through going up overlapping positive voltage Vscn=145 (V) and formation voltage Vc at negative voltage Va=-180 (V).Therefore, voltage Vc=-35 (V).Wherein, these magnitudes of voltage are an example only, and expectation suitably is set at optimum value according to the characteristic of panel 10 and the specification of plasma display system etc.
Then, the action during detailed description writes.At first, the power consumption that suppresses data electrode driver circuit is described and the method that can not reduce the image display quality.
Fig. 4 is the figure that has or not that writes pulse in a certain son of the expression field, illustrates the pixel corresponding to 5 * 5=25 discharge cell.Here, " 0 " expression does not write pulse, and " 1 " expression writes pulse.The cancellate pattern that writes like this is not special pattern, even draw naturally, can handle through carrying out picture signals such as dithering process yet, produces such pattern that writes.And so cancellate writing in the pattern, the power consumption of data electrode driver circuit depends on the order that applies of scanning impulse significantly.
Fig. 5 be used for estimating carried out according to scan electrode SCi-2, scan electrode SCi-1, scan electrode SCi, scan electrode SCi+1, scan electrode SCi+2 ... The figure of power consumption of the data electrode driver circuit of order when applying the write activity (below, abbreviate " write activity successively " as) of scanning impulse.In Fig. 5, represented to write pulse, flow through the current waveform IDj of data electrode Dj through discharging and recharging of interelectrode capacitance to scanning impulse that scan electrode SCi-2～scan electrode SCi+2 applies, to what data electrode Dj-2～data electrode Dj+2 applied.
During till from moment t1 to t2 constantly, SCi-2 applies scanning impulse to scan electrode, and data electrode Dj-2, data electrode Dj, data electrode Dj+2 applied writes pulse, writes discharge thereby produce.At this moment, for data electrode Dj-1, data electrode Dj+1, do not apply and write pulse, therefore do not produce and write discharge.
During till from moment t2 to t3 constantly, SCi-1 applies scanning impulse to scan electrode, and data electrode Dj-1, data electrode Dj+1 applied writes pulse, writes discharge thereby produce.For data electrode Dj-2, data electrode Dj, data electrode Dj+2, do not apply and write pulse, therefore do not produce and write discharge.Below, likewise apply the pulse that writes shown in Figure 5.
If pay close attention to the electric current I Dj that flows through data electrode Dj this moment, then flow through scan electrode SC1～scan electrode SCn and keep electrode SU1～the keep electric current that the interelectrode capacitance between electrode Sun and the data electrode Dj discharges and recharges.The power consumption of the data electrode driver circuit when therefore, showing grid pattern becomes very large value.
Fig. 6 is the figure that is used to estimate the power consumption of the data electrode driver circuit when showing the grid pattern identical with Fig. 5; Be illustrated in carried out according to scan electrode SCi-2, scan electrode SCi, scan electrode SCi+2 ..., scan electrode SCi-1, scan electrode SCi+1 order when applying the write activity of scanning impulse (below, abbreviate " leap write activity " as), write during in driving voltage waveform and the charging and discharging currents waveform of the interelectrode capacitance of this moment.
During till from moment t11 to t12 constantly, SCi-2 applies scanning impulse to scan electrode, and data electrode Dj-2, data electrode Dj, data electrode Dj+2 applied writes pulse, writes discharge thereby produce.At this moment, for data electrode Dj-1, data electrode Dj+1, do not apply and write pulse, therefore do not produce and write discharge.
During till from moment t12 to t13 constantly, SCi applies scanning impulse to scan electrode, and data electrode Dj-2, data electrode Dj, data electrode Dj+2 continued to apply writes pulse, writes discharge thereby produce.Below, likewise data electrode Dj-2, data electrode Dj, data electrode Dj+2 continuing to apply and write pulse, continuation does not apply and writes pulse for data electrode Dj-1, data electrode Dj+1.Therefore, in data electrode Dj, can not flow through charging and discharging currents, and IDj=0, so power consumption diminishes.
Hence one can see that, even under the situation that shows identical pattern, also according to scan electrode SC1～scan electrode SCn is applied the order of scanning impulse, the power consumption of data electrode driver circuit significantly changes.
Therefore, by every sub-field, estimate the power consumption of power consumption when having carried out the leap write activity when having carried out write activity successively, carry out the little write activity of power consumption, thereby can suppress the power consumption of data electrode driver circuit and can not reduce the image display quality.
Then, the minimizing that suppresses the required wall electric charge of write activity and carry out the stable method that writes discharge is described.The inventor is divided into the viewing area of 12 parts of 64 scan electrodes that comprise continuous configuration respectively with the image display area of panel, and the measurement below having carried out.
Fig. 7 is the write sequence of expression each several part viewing area and the performance plot that is used to produce the relation between the stable amplitude that writes the required scanning impulse of discharge; Transverse axis is represented the order of the write activity of part viewing area, and the longitudinal axis representes to be used to produce the stable amplitude that writes the required scanning impulse of discharge.Thus, according to the write sequence of part viewing area, be used to produce the stable amplitude that writes the required scanning impulse of discharge and also change.And, the slow part viewing area of write sequence, it is big more to be used to produce the stable amplitude that writes the required scanning impulse of discharge.For example; In the part viewing area that writes at first, be used to produce the stable amplitude that writes the required scanning impulse of discharge and be approximately 80 (V), but in the 12nd part viewing area that writes; The amplitude of required scanning impulse is approximately 150 (V), has approximately increased by 70 (V).
Think that this is because the wall electric charge that during initialization, forms reduces along with the process of time lentamente.In addition, be applied to each data electrode according to display image in during writing, write pulse voltage so in the discharge cell that does not apply scanning impulse, also apply owing to write pulse voltage.Through such change in voltage, the wall electric charge also can reduce, so think that the discharge cell mesospore electric charge that final stage during writing writes can further reduce.
Fig. 8 be expression part viewing area the rate of lighting (below; Abbreviate " part light rate " as) and be used to produce the figure of the relation between the stable amplitude that writes the required scanning impulse of discharge; Transverse axis representes partly to light rate, and the longitudinal axis representes to be used to produce the stable amplitude that writes the required scanning impulse of discharge.This measurement is in a part viewing area, when changing the ratio of lighting unit, has measured and is used to produce the measurement how stable amplitude that writes the required scanning impulse of discharge changes.
Thus, be used to produce the stable amplitude that writes the required scanning impulse of discharge along with partly lighting rate and changing.And it is high more that part is lighted rate, and the amplitude of scanning impulse is also big more.For example, lighting rate in part is 10% o'clock, and the amplitude of required scanning impulse is approximately 118 (V), is 100% o'clock but light rate in part, and the amplitude of required scanning impulse is approximately 149 (V), has approximately increased by 31 (V).
Think that this is because if part is lighted rate to rise, then discharge current can increase, big with respect to the pressure drop change of scanning impulse.And such tendency becomes bigger along with the big pictureization of panel.
Thus,, it is big more when the order of carrying out write activity is slower to be used to produce the stable amplitude that writes the required scanning impulse of discharge, and the rate of partly lighting is big more when high more.Therefore, and part this part viewing area slow in the scanning sequency of part viewing area lighted under the high situation of rate, and the amplitude of required scanning impulse further increases.In other words, such experimental result representes if light the high part viewing area of rate and begin to carry out earlier write activity from part, carries out the stable discharge that writes when then can suppress the amplitude of scanning impulse.
In this embodiment; For the inhibition of the power consumption of taking into account data electrode driver circuit and stable writes discharge; The image display area of panel 10 is divided into a plurality of parts viewing area of stipulating several scan electrodes that comprises continuous configuration respectively; Detect the part of each part viewing area and light rate, light the high part viewing area of rate from part and begin to apply earlier scanning impulse.In addition, estimate the power consumption of power consumption when having carried out the leap write activity when having carried out write activity successively, one of them in write activity successively that its power consumption reduces and the leap write activity selected to make in each part viewing area.
Then, illustrate the details of the write activity in this embodiment.
Fig. 9 is the synoptic diagram of the part viewing area of the panel 10 in this embodiment of expression.In this embodiment, the image display area of panel 10 is divided into several i.e. 12 the part viewing area Ar1～part viewing area Ar12 of 64 scan electrodes that stipulates that comprise continuous configuration respectively.Promptly; Part viewing area Ar1 is the zone that comprises scan electrode SC1～scan electrode SC64; Part viewing area Ar2 is the zone that comprises scan electrode SC65～scan electrode SC128 ..., part viewing area Ar12 is the zone that comprises scan electrode SC705～scan electrode SC768.
Figure 10 is the detailed sequential chart of an example of the write activity of the plasma display system of expression in the embodiment of the present invention.In Figure 10, the part that expression is made as part viewing area Ar2 light rate the highest, then be that the part of part viewing area Ar3 is lighted the rate height, then is that the part of part viewing area Ar1 is lighted the high example of rate again.In addition, Ar3 carries out dithering process to the part viewing area to part viewing area Ar1 in expression, in these part viewing areas, leaps the example of write activity.
At first, scan electrode SC65～scan electrode SC128 among the Ar2 of part viewing area is divided into the scan electrode group (2od) that is made up of the odd number scan electrode and two scan electrode group of the scan electrode group (2ev) that is made up of the even number scan electrode with being included in.Then, the scan electrode SC65 as the initial scan electrode of scan electrode group (2od) is applied scanning impulse.The pulse width of the scanning impulse of this moment is a time T 1.Then, second scan electrode SC67 as scan electrode group (2od) applied scanning impulse.The pulse width of the scanning impulse of this moment also is a time T 1.Then, the 3rd scan electrode SC69 as scan electrode group (2od) applied scanning impulse.But the pulse width of the scanning impulse of this moment is the time T 2 than time T 1 weak point.Below, to the scan electrode SC71 of scan electrode group (2od), scan electrode SC73, scan electrode SC75 ..., SC127 applies scanning impulse successively.And the pulse width of the scanning impulse of this moment also is a time T 2.
The initial scan electrode of the scan electrode group (2ev) that then, the even number scan electrode by part viewing area Ar2 is constituted, be that scan electrode SC66 applies the scanning impulse that pulse width is a time T 1.Then, second scan electrode SC68 as scan electrode group (2ev) applied the scanning impulse that pulse width is a time T 1.Then, the 3rd scan electrode SC70 as scan electrode group (2ev) applied the scanning impulse of pulse width than the time T 2 of time T 1 weak point.Below, to the scan electrode SC72 of scan electrode group (2ev), scan electrode SC74, scan electrode SC76 ..., SC128 applies the scanning impulse that pulse width is a time T 2 successively.
Then, scan electrode SC129～scan electrode SC192 among the Ar3 of part viewing area is divided into the scan electrode group (3od) that is made up of the odd number scan electrode and two scan electrode group of the scan electrode group (3ev) that is made up of the even number scan electrode with being included in.Then, the scan electrode SC129 as the initial scan electrode of scan electrode group (3od) is applied the scanning impulse that pulse width is a time T 1, then scan electrode SC131 is applied the scanning impulse that pulse width is a time T 1.Then, the 3rd scan electrode SC133 to scan electrode group (3od) applies the scanning impulse of pulse width than the time T 2 of time T 1 weak point.Below, to the scan electrode SC135 of scan electrode group (3od), scan electrode SC137 ..., SC191 applies the scanning impulse that pulse width is a time T 2 successively.
Then; The initial scan electrode of the scan electrode group (3ev) that the even number scan electrode by part viewing area Ar3 is constituted, be that scan electrode SC130 applies the scanning impulse that pulse width is a time T 1, second scan electrode SC132 of scan electrode group (3ev) applied the scanning impulse that pulse width is a time T 1.Then, to the scan electrode SC134 of scan electrode group (3ev), scan electrode SC136, scan electrode SC138 ..., SC192 applies the scanning impulse of pulse width for the time T 2 shorter than time T 1 successively.
Then; To part viewing area Ar1 also is same; To the initial of scan electrode group (1od) with from applying the scanning impulse that pulse width is a time T 1 from the beginning of second scan electrode SC1, scan electrode SC3, to the scan electrode SC5 after this, scan electrode SC7 ..., scan electrode SC63 applies the scanning impulse of the pulse width time T 2 shorter than time T 1 successively.Then; To the initial of scan electrode group (1ev) with from applying the scanning impulse that pulse width is a time T 1 from the beginning of second scan electrode SC2, scan electrode SC4, to the scan electrode SC6 after this, scan electrode SC8 ..., scan electrode SC64 applies the scanning impulse of the pulse width time T 2 shorter than time T 1 successively.
Thus, in this embodiment,, light rate and detect the ratio of the discharge cell number that should light, and light the high part viewing area of rate from part and apply scanning impulse successively as part to each of part viewing area.
In addition; Scan electrode in the part viewing area is divided into the scan electrode group that is made up of the odd number scan electrode and two scan electrode group of the scan electrode group that is made up of the even number scan electrode with being included in; A scan electrode group is applied after the scanning impulse successively, another scan electrode group is applied scanning impulse successively.And, will to the scan electrode that belongs to a scan electrode group first to the stipulate the pulse width of the scanning impulse that several (they being second) apply in this embodiment time T 1 set comparison to belong to the time T 2 of pulse width of the scanning impulse that another scan electrode of a scan electrode group applies long.Likewise, will to the scan electrode that belongs to another scan electrode group first to the stipulate the pulse width of the scanning impulse that several (they being second) apply in this embodiment time T 1 set comparison to belong to the time T 2 of pulse width of the scanning impulse that another scan electrode of another scan electrode group applies long.Here, in this embodiment, the time T 1 of pulse width is 1.3 μ s, and the time T 2 of pulse width is 1.0 μ s.The pulse width of gated sweep pulse the reasons are as follows like this.
As shown in Figure 4, apply under discharge cell that writes pulse and the situation that does not apply the discharge cell that writes pulse alternately having arranged, can suppress power consumption through leaping write activity.This be because, through respectively unified in time apply the discharge cell that writes pulse and do not apply the discharge cell that writes pulse carry out write activity, thereby can reduce the charging and discharging currents of data electrode.But, when the odd number scan electrode switches to the even number scan electrode, and when the even number scan electrode switches to the odd number scan electrode, can the excessive charging and discharging currents of transient flow in data electrode.
Descend through big charging and discharging currents at this moment if write the voltage Vd of pulse, then have the elongated possibility of discharge delay time that writes discharge.If discharge delay time is longer than the pulse width of scanning impulse, then can not produce and write discharge, discharge cell that should be luminous is not luminous, so the image display quality can descend.
But; In this embodiment, to the scan electrode that belongs to a scan electrode group first to the stipulate the scanning impulse that several apply pulse width be set to comparison to belong to the pulse width of the scanning impulse that another scan electrode of a scan electrode group applies long.Likewise, will to the scan electrode that belongs to another scan electrode group first to the stipulate the scanning impulse that several apply pulse width set comparison to belong to the pulse width of the scanning impulse that another scan electrode of another scan electrode group applies long.Therefore, even it is to a certain degree elongated to write the discharge delay time of discharge, also can produces and write discharge, so can prevent the decline of image display quality.
In addition; In this embodiment; To stipulate that the time T 1 of the pulse width of the scanning impulse that several apply is set at 1.3 μ s to first of the scan electrode that belongs to a certain scan electrode group; The time T 2 of the pulse width of the scanning impulse that is applied to another scan electrode is set at 1.0 μ s, stipulates that several are made as second and are illustrated with the, but expectation is set at optimum value according to the specification of panel, plasma display system etc. with these values.For example, under the little situation of the electric capacity of the power supply that produces voltage Vd, expectation stipulates that with the several are set at the size of the 5th grade.
The driving circuit of the plasma display system in this embodiment then, is described.
Figure 11 is the circuit block diagram of the plasma display system 30 in the embodiment of the present invention.Plasma display system 30 comprises panel 10 and driving circuit, and driving circuit comprises imaging signal processing circuit 31, data electrode driver circuit 32, scan electrode driving circuit 33, keep electrode drive circuit 34, control signal generation circuit 35, the power circuit (not shown) of the required power supply of each circuit module is provided.
Imaging signal processing circuit 31 is the pixel count that can in panel 10, show and the picture signal of grey with image signal transformation, and further is transformed to " 1 ", the view data of " 0 " that makes luminous/non-luminous each corresponding to digital signal in every sub-field.Data electrode driver circuit 32 is transformed to the pulse that writes corresponding to each data electrode D1～data electrode Dm with view data, and is applied to each data electrode D1～data electrode Dm.
Control signal generation circuit 35 produces the various control signals of the action of each circuit module of control, and offers each circuit module based on horizontal-drive signal, vertical synchronizing signal.In addition, in every sub-field,, detect the ratio of the discharge cell number that should light as partly lighting rate, and decision applies the order of the part viewing area of scanning impulse to each part viewing area.In addition, estimate power consumption and the power consumption when having carried out the leap write activity when having carried out write activity successively, decision is carried out successively write activity or is leaped write activity.In addition, the pulse width of decision scanning impulse.
Scan electrode driving circuit 33 generates driving voltage waveform, and imposes on scan electrode SC1～scan electrode SCn respectively based on control signal.Especially, produce the scanning impulse of pulse width based on control signal, and, scan electrode SC1～scan electrode SCn is applied scanning impulse with order corresponding to control signal.Keep electrode drive circuit 34 and generate driving voltage waveform, and impose on respectively and keep electrode SU1～keep electrode SUn based on control signal.
Figure 12 is the circuit diagram of structure of the scan electrode driving circuit 33 of the plasma display system 30 of expression in the embodiment of the present invention.Scan electrode driving circuit 33 comprises the pulse generation portion 42 that keeps, the scanning impulse generation portion 43 of initialization voltage generation portion 41, scan electrode side, and each output of scanning impulse generation portion 43 is connected to the scan electrode SC1～scan electrode SCn of pulse 10 respectively.
Scanning impulse generation portion 43 comprises: be used for the reference potential A that scanning impulse produces portion 43 be connected to negative voltage Va switch S 44, be used for voltage Vscn overlap onto reference potential A power supply E43, be used for the on-off element QH1～on-off element QHn of the on high-tension side voltage of each out-put supply E43 of n root scan electrode SC1～scan electrode SCn and the on-off element QL1～on-off element QLn of voltage that is used for the low-pressure side of out-put supply E43.And on-off element QH1～on-off element QHn, on-off element QL1～on-off element QLn are converged to each output of a plurality of outputs, and are integrated among a plurality of IC.These IC are scans I C, and scan electrode driving circuit 33 has a plurality of scans I C that produce the scanning impulse that imposes on scan electrode SC1～scan electrode SCn.
In this embodiment, explain that the on-off element of 64 outputs is integrated into the situation of a monolithic IC.And, use 12 scans I C (below, be labeled as " IC (1), IC (2) ..., IC (12) ") constitute scanning impulse generation portion 43, and drive n=768 root scan electrode SC1～scan electrode SCn.And; IC (1) drives the scan electrode SC1～scan electrode SC64 that belongs to part viewing area Ar1; IC (2) drives the scan electrode SC65～scan electrode SC128 that belongs to part viewing area Ar2; Below likewise, IC (12) drives the scan electrode SC705～scan electrode SC768 that belongs to part viewing area Ar12.Like this, through a plurality of on-off element QH1～on-off element QHn, on-off element QL1～on-off element QLn carry out ICization, thereby can circuit be pooled together compactly, erection space also can reduce, and can also reduce cost.
Initialization voltage generation portion 41 makes the reference potential A of scanning impulse generation portion 43 rise skewedly or descend in during initialization, the driving voltage waveform in producing during the initialization.At this moment; On-off element QH1～on-off element QHn through making scanning impulse generation portion 43 ends, on-off element QL1～on-off element QLn conducting; Thereby, each scan electrode SC1～scan electrode SCn is applied waveform of initialization voltage via on-off element QL1～on-off element QLn.Perhaps; Through on-off element QH1～on-off element QHn conducting, on-off element QL1～on-off element QLn are ended; Thereby via power supply E43, on-off element QH1～on-off element QHn, the waveform of initialization voltage of the voltage Vscn that each scan electrode SC1～scan electrode SCn is applied power supply E43 overlapping.
The reference potential A that keeps the input of pulse generation portion 42 through scanning impulse being produced portion 43 is made as voltage Vsus or earthing potential, keeps pulse thereby produce.At this moment; On-off element QH1～on-off element QHn through making scanning impulse generation portion 43 ends, on-off element QL1～on-off element QLn conducting; Thereby, each scan electrode SC1～scan electrode SCn is applied and keeps pulse via on-off element QL1～on-off element QLn.
Figure 13 is the circuit block diagram of details of the scans I C of the plasma display system 30 of expression in the embodiment of the present invention.First scans I C of driven sweep electrode SC1～scan electrode SC64, be such as stated on-off element QH1～on-off element QH64, the on-off element QL1～on-off element QL64 that is used for the output scanning pulse voltage that comprise of IC (1).In addition, also comprise the on-off element control part 51 that is used to control these on-off elements QH1～on-off element QH64, on-off element QL1～on-off element QL64, be used to determine the scans I C selection portion 52 of order of the write activity of scans I C.
On-off element control part 51 comprises output control part RG1～output control part RG64 and shift register SR.Shift register SR is the shift register with data input pin, clock input terminal, signal input end and 64 lead-out terminals, and 64 signal o1～o64 that will become the basis of scanning impulse output to output control part RG1～output control part RG64 respectively.Control signal c0 is any control signal of selecting in write activity successively and the leap write activity.Control signal c0 be low level (below; Abbreviate " L " as) situation under; During each input clock ck; The single pulse signal sg of the pulse width with rising edge that comprises clock ck is shifted successively, and according to output control part RG1, output control part RG2, output control part RG3 ..., output control part RG64 order output to output control part RG1～output control part RG64 respectively.In addition; Control signal c0 be high level (below; Abbreviate " H " as) situation under; During each input clock ck; The single pulse signal sg of the pulse width with rising edge that comprises clock ck is shifted successively, and according to output control part RG1, output control part RG3, output control part RG5 ..., output control part RG63, output control part RG2, output control part RG4, output control part RG6 ..., output control part RG64 order output to output control part RG1～output control part RG64 respectively.
The output signal o1 of output control part RG1 input two control signal c1, c2 and shift register SR, CS element QH1, on-off element QL1.The output signal o2 of output control part RG2 input two control signal c1, c2 and shift register SR, CS element QH2, on-off element QL2.Output control part RG3～output control part RG64 also is same.
Figure 14 is the figure of action of output control part RG1～output control part RG64 and on-off element QH1～on-off element QH64, the on-off element QL1～on-off element QL64 of the scans I C of the plasma display system 30 of expression in the embodiment of the present invention; According to two control signal c1, control signal c2, following CS element QH1～on-off element QH64, on-off element QL1～on-off element QL64.At control signal c1, control signal c2 all is under the situation of " L ", makes on-off element QHi, on-off element QLi together end, thereby output is made as high impedance status.At control signal c1 is that " L ", control signal c2 are under the situation of " H ", according to the output of the shift register SR of correspondence, CS element QHi, on-off element QLi.In this embodiment, if the output oi of shift register SR be " H ", on-off element QHi conducting, on-off element QLi are ended, if the output oi of shift register SR is " L ", make then that on-off element QHi ends, on-off element QLi conducting.At control signal c1 is that " H ", control signal c2 are under the situation of " L ", no matter the output of corresponding shift register SR all makes on-off element QHi by, on-off element QLi conducting.In addition, all be under the situation of " H " at control signal c1, c2, no matter the output of corresponding shift register SR all makes on-off element QHi conducting, on-off element QLi end.
Scans I C selection portion 52 comprises two trigger FF1, FF2, NOT-AND gate G1.Trigger FF1 is the common trigger that possesses data input pin, clock input terminal and lead-out terminal; Obtain the selection sweep signal si that is input to data input pin at the negative edge of the selection signal sel that is input to clock input terminal constantly, and output to NOT-AND gate G1.NOT-AND gate G1 will reverse trigger FF1 output signal ss and the logic of selecting signal sel and signal sg output to data input pin of shift register SR.
Trigger FF2 is and the trigger of trigger FF1 same structure that sweep signal si, input clock ck in clock input terminal are selected in input in data input pin.And output will select sweep signal si to postpone inhibit signal so of a clock.
IC (2)～IC (12) also is identical structure.
Figure 15 is the figure of connection of scans I C (the 1)～IC (12) of the plasma display system 30 of expression in the embodiment of the present invention.In each IC of 12 scans I C (IC (1)～IC (12)), common input control signal c0, control signal c1, control signal c2, selection signal sel, clock ck (not illustrating control signal c0, control signal c1, control signal c2).But, select sweep signal si only to be imported into first scans I C, to be IC (1).And it is that writing of IC (2) selected sweep signal si (2) that inhibit signal so (1) that in IC (1), has postponed a clock period is input as second scans I C.Below, likewise, inhibit signal so (2) of IC (2) is imported as the selection sweep signal si (3) of IC (3) ..., inhibit signal so (11) of IC (11) is imported as the selection sweep signal si (12) of IC (12).12 scans I C are divided into multistage connecting into selects the every delay of sweep signal si to be transmitted successively from IC (1) to IC (12) in the time of a clock period.
Thus; Through scans I C connected into control signal c0, control signal c1, control signal c2, select signal sel, clock ck parallel connection and to select sweep signal si to be divided into multistage, thereby can from 12 scans I C, select a scans I C randomly and produce scanning impulse.
Figure 16 is the sequential chart of action of scans I C selection portion 52 of scans I C that is used for explaining the plasma display system 30 of embodiment of the present invention, as an example, is illustrated in and selects second scans I C, the sequential chart when being IC (2).
At first, the selection sweep signal si that has the pulse width of a clock period from control signal generation circuit 35 input is as the data input signal si (1) of IC (1).So the trigger FF2 (1) inner through IC (1) postpones a clock period, and the data input signal si (2) of this signal as IC (2) imported.Below, likewise, every delay clock period and be that data input signal si (3)～data input signal si (12) of IC (3)～IC (12) imports as the 3rd later scans I C.
According to the negative edge moment of the selection signal sel that exports from control signal generation circuit 35, the selection of decision scans I C.That is, in the scans I C that wants to select, imported the moment of selecting sweep signal, the selection signal sel of pulse type has been input to each scans I C.So, at the negative edge of selecting signal sel constantly, selection sweep signal si (1)～selection sweep signal si (12) of difference park scan IC in trigger FF1 (1)～trigger FF1 (12) of IC (1)～IC (12).In Fig. 9; Owing to writing the moment input select signal sel of commencing signal si (2), become " L " level so have only the output signal ss (2) of trigger FF1 (2) to become " H " level, output signal ss (1) in addition, output signal ss (3)～output signal ss (12) to second scans I C input.
Then; Sweep signal si (12) is selected in input in the 12nd scans I C; And exported postponed a clock period through trigger FF2 (12) signal so (12) afterwards, will comprise that the selection signal sel of pulse type of the rising edge of clock ck is input to each scans I C.So the output sg (2) of the NOT-AND gate G1 (2) of IC (2) becomes " L " level in only during a rising edge that comprises clock ck.And the output sg (2) of the NOT-AND gate G1 (2) of scans I C in addition～NOT-AND gate G1 (12)～output sg (12) still keeps " H " level.And at the negative edge of selecting signal sel constantly, the output signal ss (1) of the trigger FF1 (1) of IC (1)～IC (12)～trigger FF1 (12)～output signal ss (12) all is " L " level.
Thus, only in the shift register SR (2) of second scans I C, input becomes the single pulse signal sg (2) of " L " level in only during a rising edge that comprises clock ck.And afterwards, when each input clock ck, shift register SR (2) makes single pulse signal sg (2) displacement successively.At this moment, if control signal c0 is made as " H ", then according to scan electrode SC65, scan electrode SC67 ..., scan electrode SC127, scan electrode SC66, scan electrode SC68 ..., scan electrode SC128 order apply scanning impulse.And; Through being made as time T 1 with the corresponding clock period of scanning impulse that is applied to scan electrode SC65, scan electrode SC67, scan electrode SC66, scan electrode SC68; To the clock period corresponding be made as time T 2 with scanning impulse in addition, thus the scanning impulse of the pulse width that can obtain to expect.
In addition, above-mentioned driving circuit is represented an example, and the structure of driving circuit is not limited to above-mentioned structure.
In addition, the concrete numerical value of in this embodiment, representing etc. are an example only, and expectation is set at the best according to the characteristic of panel and the specification of plasma display system etc.
(utilizability on the industry)
Even the present invention's high-fineness, big picture panel; Also can carry out stable write discharge and the time; Be used to cut down the switching of scanning impulse of the electric power of data electrode driver circuit, as the driving method of panel and plasma display system and useful.
Symbol description:
10 panels
12 scan electrodes
13 keep electrode
22 data electrodes
30 plasma display systems
31 imaging signal processing circuits
32 data electrode driver circuits
33 scan electrode driving circuits
34 keep electrode drive circuit
35 control signal generation circuit
41 initialization voltage generation portions
42 keep pulse generation portion
43 scanning impulse generation portions
51 on-off element control parts
52 scans I C selection portions
Claims (3)
1. the driving method of a Plasmia indicating panel; By have write during with keep during many sub-field constitute a field and drive the Plasmia indicating panel that comprises a plurality of discharge cells; Said discharge cell comprise by scan electrode and keep show electrode that electrode constitutes to and data electrode; The driving method of said Plasmia indicating panel is characterised in that
The image display area of said Plasmia indicating panel is divided into a plurality of parts viewing area of the scan electrode of the regulation radical that comprises continuous configuration respectively, and
Scan electrode in the said part viewing area is divided into the scan electrode group that is made up of the odd number scan electrode and two scan electrode group of the scan electrode group that is made up of the even number scan electrode with being included in,
A scan electrode group is applied after the scanning impulse successively, another scan electrode group is applied scanning impulse successively, and
Will to the scan electrode that belongs to a said scan electrode group first to the stipulate the scanning impulse that several apply pulse width set comparison to belong to the pulse width of the scanning impulse that other scan electrodes of a said scan electrode group apply long,
Will to the scan electrode that belongs to said another scan electrode group first to the stipulate the scanning impulse that several apply pulse width set comparison to belong to the pulse width of the scanning impulse that other scan electrodes of said another scan electrode group apply long.
2. the driving method of Plasmia indicating panel according to claim 1 is characterized in that,
To each of said part viewing area, the ratio of the discharge cell number that detection should be lighted is used as part and lights rate, and lights the high part viewing area of rate from said part earlier and begin to apply scanning impulse.
3. plasma display system possesses: comprise the Plasmia indicating panel of a plurality of discharge cells, said discharge cell comprise by scan electrode and keep show electrode that electrode constitutes to and data electrode; And driving circuit, by have write during with keep during many sub-field constitute a field and drive said Plasmia indicating panel, said plasma display system is characterised in that,
Said driving circuit comprises a plurality of scan ICs, and said scan IC applies scanning impulse to the scan electrode of the regulation radical of continuous configuration,
To be divided into the scan electrode group that constitutes by the odd number scan electrode and two scan electrode group of the scan electrode group that constitutes by the even number scan electrode by a scan electrode that said scan IC drove,
Said scan IC applies after the scanning impulse a scan electrode group successively, and another scan electrode group is applied scanning impulse successively, and
Will to the scan electrode that belongs to a said scan electrode group first to the stipulate the scanning impulse that several apply pulse width set comparison to belong to the pulse width of the scanning impulse that other scan electrodes of a said scan electrode group apply long, will to the scan electrode that belongs to said another scan electrode group first to the stipulate the scanning impulse that several apply pulse width set to such an extent that to compare the pulse width of the scanning impulse that other scan electrodes of belonging to said another scan electrode group apply long.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-163435 | 2009-07-10 | ||
| JP2009163435 | 2009-07-10 | ||
| PCT/JP2010/004426 WO2011004595A1 (en) | 2009-07-10 | 2010-07-07 | Plasma display panel driving method and plasma display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102473375A true CN102473375A (en) | 2012-05-23 |
Family
ID=43429023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800308046A Pending CN102473375A (en) | 2009-07-10 | 2010-07-07 | Plasma display panel driving method and plasma display device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120105516A1 (en) |
| JP (1) | JP5170313B2 (en) |
| KR (1) | KR20120028369A (en) |
| CN (1) | CN102473375A (en) |
| WO (1) | WO2011004595A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120287111A1 (en) * | 2010-01-12 | 2012-11-15 | Jun Kamiyamaguchi | Plasma display device and plasma display panel driving method |
| US10755020B1 (en) * | 2019-04-03 | 2020-08-25 | Microsoft Technology Licensing, Llc | Thermal arrangement of modules in server assemblies |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804965A (en) * | 2005-01-14 | 2006-07-19 | 台朔光电股份有限公司 | Plasma display driving method and apparatus |
| KR20080038644A (en) * | 2006-10-30 | 2008-05-07 | 삼성에스디아이 주식회사 | Plasma display and driving method thereof |
| CN101188086A (en) * | 2006-11-22 | 2008-05-28 | 三星Sdi株式会社 | Plasma display and driving method thereof |
| WO2009066423A1 (en) * | 2007-11-19 | 2009-05-28 | Panasonic Corporation | Plasma display device and plasma display panel drive method |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3408684B2 (en) * | 1995-12-25 | 2003-05-19 | 富士通株式会社 | Driving method of plasma display panel and plasma display device |
| JP3466098B2 (en) * | 1998-11-20 | 2003-11-10 | 富士通株式会社 | Driving method of gas discharge panel |
| KR100726938B1 (en) * | 2004-09-30 | 2007-06-14 | 엘지전자 주식회사 | Method and apparatus for controlling data |
| KR100692867B1 (en) * | 2005-05-10 | 2007-03-12 | 엘지전자 주식회사 | Plasma display apparatus and driving method thereof |
| KR100811603B1 (en) * | 2005-10-18 | 2008-03-11 | 엘지전자 주식회사 | Plasma Display Apparatus AND Driving method thereof |
| WO2007069687A1 (en) * | 2005-12-15 | 2007-06-21 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel and plasma display and method for driving plasma display panel |
| JPWO2007116437A1 (en) * | 2006-03-30 | 2009-08-20 | 篠田プラズマ株式会社 | Display device |
| JP2008170651A (en) * | 2007-01-10 | 2008-07-24 | Matsushita Electric Ind Co Ltd | Drive method for plasma display device, and the plasma display device |
| JP2009008806A (en) * | 2007-06-27 | 2009-01-15 | Pioneer Electronic Corp | Driving method of plasma display panel |
| KR20090044782A (en) * | 2007-11-01 | 2009-05-07 | 엘지전자 주식회사 | Plasma display device thereof |
| KR20090044780A (en) * | 2007-11-01 | 2009-05-07 | 엘지전자 주식회사 | Plasma display device thereof |
| KR100900065B1 (en) * | 2007-11-01 | 2009-06-01 | 엘지전자 주식회사 | Method for driving plasma display panel and plasma display device thereof |
| KR20090044778A (en) * | 2007-11-01 | 2009-05-07 | 엘지전자 주식회사 | Method for driving plasma display panel and plasma display device thereof |
| CN101861614B (en) * | 2008-02-14 | 2012-11-07 | 松下电器产业株式会社 | Plasma display device and method for driving the same |
| KR20100022381A (en) * | 2008-08-19 | 2010-03-02 | 엘지전자 주식회사 | Plasma display apparatus |
| KR20100026349A (en) * | 2008-08-29 | 2010-03-10 | 엘지전자 주식회사 | Plasma display apparatus |
-
2010
- 2010-07-07 CN CN2010800308046A patent/CN102473375A/en active Pending
- 2010-07-07 US US13/383,074 patent/US20120105516A1/en not_active Abandoned
- 2010-07-07 JP JP2011521819A patent/JP5170313B2/en not_active Expired - Fee Related
- 2010-07-07 WO PCT/JP2010/004426 patent/WO2011004595A1/en active Application Filing
- 2010-07-07 KR KR1020127000599A patent/KR20120028369A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804965A (en) * | 2005-01-14 | 2006-07-19 | 台朔光电股份有限公司 | Plasma display driving method and apparatus |
| KR20080038644A (en) * | 2006-10-30 | 2008-05-07 | 삼성에스디아이 주식회사 | Plasma display and driving method thereof |
| CN101188086A (en) * | 2006-11-22 | 2008-05-28 | 三星Sdi株式会社 | Plasma display and driving method thereof |
| WO2009066423A1 (en) * | 2007-11-19 | 2009-05-28 | Panasonic Corporation | Plasma display device and plasma display panel drive method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2011004595A1 (en) | 2012-12-20 |
| KR20120028369A (en) | 2012-03-22 |
| JP5170313B2 (en) | 2013-03-27 |
| US20120105516A1 (en) | 2012-05-03 |
| WO2011004595A1 (en) | 2011-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100426348C (en) | Plasma display panel (PDP) and method of driving PDP | |
| KR100918357B1 (en) | Driving method of plasma display panel | |
| CN100487769C (en) | Plasma display apparatus and driving method thereof | |
| CN102473375A (en) | Plasma display panel driving method and plasma display device | |
| US7808453B2 (en) | Driving method of plasma display panel and plasma display device | |
| CN101796569A (en) | Driving device, driving method, and plasma display device | |
| CN102150194A (en) | Plasma display device and method of driving plasma display panel | |
| US7639212B2 (en) | Ac-type gas-discharge display device | |
| CN101641728B (en) | Plasma display device drive method | |
| US20100315387A1 (en) | Plasma display device | |
| CN102473374A (en) | Plasma display device and drive method for a plasma display panel | |
| CN1853214A (en) | Device for driving plasma display panel | |
| US11551600B2 (en) | Display panel and display driving circuit for driving display panel | |
| KR20040057370A (en) | Apparatus and method for generating programmable drive signal in display panel | |
| CN102714014A (en) | Plasma display panel driving method and plasma display device | |
| CN101558437B (en) | Plasma display panel drive method | |
| CN102396016A (en) | Method for driving plasma display panel and plasma display device | |
| CN101241671A (en) | Display driver and display panel module | |
| KR100427018B1 (en) | A data interface circuit of a PDP television | |
| WO2011089887A1 (en) | Plasma display panel driving method and plasma display device | |
| CN116386535A (en) | Display panel, driving method thereof and display device | |
| JP2010134135A (en) | Plasma display panel module | |
| CN102422340A (en) | Method for driving plasma display panel and plasma display device | |
| KR20000001744A (en) | Method of driving a plasma display panel and a driving device | |
| CN102138171A (en) | Drive circuit for plasma display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120523 |